Basic Line Chart With Crosshairs
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Following is an example of a basic line chart with crosshairs to appear on selecting a data point. We've already seen the configuration used to draw this chart in Google Charts Configuration Syntax chapter. So, let's see the complete example.
Configurations
We've added crosshair configuration to show crosshair on selection.
// Set chart options var options = { crosshair: { color: '#000', trigger: 'selection' } };
Example
googlecharts_line_crosshairs.htm
Live Demo<html> <head> <title>Google Charts Tutorial</title> <script type = "text/javascript" src = "https://www.gstatic.com/charts/loader.js"></script> <script type = "text/javascript"> google.charts.load('current', {packages: ['corechart','line']}); </script> </head> <body> <div id = "container" style = "width: 550px; height: 400px; margin: 0 auto"> </div> <script language = "JavaScript"> function drawChart() { // Define the chart to be drawn. var data = new google.visualization.DataTable(); data.addColumn('string', 'Month'); data.addColumn('number', 'Tokyo'); data.addColumn('number', 'New York'); data.addColumn('number', 'Berlin'); data.addColumn('number', 'London'); data.addRows([ ['Jan', 7.0, -0.2, -0.9, 3.9], ['Feb', 6.9, 0.8, 0.6, 4.2], ['Mar', 9.5, 5.7, 3.5, 5.7], ['Apr', 14.5, 11.3, 8.4, 8.5], ['May', 18.2, 17.0, 13.5, 11.9], ['Jun', 21.5, 22.0, 17.0, 15.2], ['Jul', 25.2, 24.8, 18.6, 17.0], ['Aug', 26.5, 24.1, 17.9, 16.6], ['Sep', 23.3, 20.1, 14.3, 14.2], ['Oct', 18.3, 14.1, 9.0, 10.3], ['Nov', 13.9, 8.6, 3.9, 6.6], ['Dec', 9.6, 2.5, 1.0, 4.8] ]); // Set chart options var options = {'title' : 'Average Temperatures of Cities', hAxis: { title: 'Month', }, vAxis: { title: 'Temperature', }, 'width':550, 'height':400, crosshair: { color: '#000', trigger: 'selection' } }; // Instantiate and draw the chart. var chart = new google.visualization.LineChart(document.getElementById('container')); chart.draw(data, options); } google.charts.setOnLoadCallback(drawChart); </script> </body> </html>
Result
Verify the result.
googlecharts_line_charts.htm
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